dedicated to the 70th Anniversary of VICTORY in the Great Patriotic War 08—10, Ap ril, 2015 CONFERENCE PROGRAM XII INTERNATIONAL CONFERENCE «NEW IDEAS IN EARTH SCIENCES» CONFERENCE LANGUAGES: RUSSIAN, ENGLISH Mos cow · 2015 XII International scientific-practical conference GOVERNMENT SUPPORT Ministry of Education and Science of Russia Ministry of Natural Resources and Environment of Russia INDUSTRY SUPPORT JSC «Rosgeologia» ACADEMICIAN SUPPORT Russian Academy of Sciences Russian State Geological Prospecting University named after Sergo Ordzhonikidze (MGPI-RSGPU) CONFERENCE ORGANIZING COMMITTEE Co-Chairmen Roman Panov, Chief Executive Officer, JSC «Rosgeologia» Vasily Lisov, Rector, MGRI-RSGPU Deputy Co-chairman Vadim Kosyanov, Vice-Rector for Scientific and Innovative Affairs, MGRI-RSGPU Organizing Committee Member Anton Sergeev, Deputy Director, JSC «Rosgeologia» Alexey Orel, Head of Department, Ministry of Natural Resources and Environment Alexander Ladny, Assistant Head of Department of Science and Technology, Ministry of Education and Science of Russia Climent Trubetskoy, Academician of RAS, Counselor of RAS President, Vice-President of Mining Academy Oleg Bryukhovetsky, Head of Centre of Expertise, MGRI-RSGPU Conference Participants Alexander Khloponin, Deputy Prime Minister, Russian Government Dmitry Livanov, Minister of Education and Science, Russian Government «New ideas in Earth sciences» Sergey Donskoy, Minister of Natural Resources and Environment, Russian Government Zinaida Dragunkina, Head of the Council of Federation Committee on Science, Education and Culture Gennady Gorbunov, Head of the Council of the Federation Committee for Agrarian and Food Policy and Environmental Management Valery Pak, Deputy Minister of Natural Resources and Environment, Head of Federal Subsoil Resources Management Agency Eugene Kozlovsky, Vice-President of Russian Academy of Natural Sciences, Member of Supreme Mining Council of Russia, Minister of Geology of USSR (1975—1989), PhD (in Technical Sciences), Professor Victor Orlov, President of Russian Geological Society Vladimir Kashin, MP, State Duma, Russian Federation Sergey Mironov, MP, State Duma, Russian Federation, MGPI-RSGPU Honorary Professor Foreign Participants Ibrokhim Azim, Deputy Prime-Minister, Republic of Tajikistan Kuvandyk Sanakulov, Chief Executive Officer, SE “Navoi Mining and Metallurgical Combinat”, Rector of Navoi State Mining Institute, PhD (in Technical Sciences), Professor Bernd Meyer, President of Freiberg Mining Academy, Germany Dr. Andreas Handschuh, Chancellor, Freiberg Mining Academy, Germany Imomuddin Sattorov, Ambassador Extraordinary and Plenipotentiary of Republic of Tajikistan in Russia Li Peicheng — Chang”an University, prof., Honorary professor of MGRI-RSPGU Essaid Aouli — President, Chief Executive Officer of Mining and Geological Research, Algeria Dr. Zakaria Hamimi, Professor of Benha University, Egypt Dr. Basem Zoheir, Professor of Benha University, Egypt Mohamed Hassan Younis, Professor of Benha University, Egypt Academicians, Russian Academy of Sciences Alexander Gliko, Academician-Secretary, Department of Earth Sciences, RAS Nikolay Laverov, Dmitry Rundkvist, Anatoly Dmitrievsky, Nikolay Bortnikov, Victor Osipov, Yury Malyshev, Vladimir Melnikov, others XII International scientific-practical conference Conference Partners: Russian Foundation for Basic Research Russian Geological Society («ROSGEO») Association of Geological Organizations («AGO») FSUE «Institute of Mineralogy, Geochemistry and Chrystallography of Rare Elements» («IMGRE») FSUGE «GIDROSPETZGEOLOGIYA» FSUE «All-Russian Scientific and Research Institute of Raw Materials named after Fedorovsky» («VIMS») United Geological Company — CJS «UGC Group» FSUE «All-Russian Research Geological Oil Institute» («VNIGNI») Tula Scientific and Research Geological Enterprise — OJS «Tula NIGP» All-Russian Scientific and Research Institute of Geological, Geophysical and Geochemical Systems — FSUE «VNIIGEOSYSTEM» Hydrogeological and Geoecological Company — CJS «GIDEK» Tula Mining Engineering Plant («TMEP») MGPI-RSGPU Board of Trustees S-I GEOLOGICAL PROCESSES, STRATIGRAPHY, TECTONICS AND GEODYNAMICS PRELIMINARY RESULTS OF STUDYING A ZONE OF LIMESTONE PYRITIZATION AT THE PAN'SHINSKOE DEPOSIT, MOSCOW OBLAST 1Galushkin A.I., 2Ivanov V.M. 3Yashunsky Yu.V., Research supervisor [email protected], [email protected], Ordzhonikidze Russian State Geological Prospecting University, Moscow, Russia; [email protected], Aerogeologiya Scientific and Production Enterprise, Moscow, Russia A zone of pyritization of Middle Carboniferous limestones was studied in the course of edu- cational geological practice at the Pan'shinskoe Deposit in Kolomenskii raion, Moscow oblast. The deposit is being developed to produce raw cement. A quarry strips limestones and dolomites of the peskovskaya stratum, myachkovskii horizon, moskovskii stage, Middle Carboniferous. Those deposits are overlain by clays of Callovian stage, Upper Jurassic. Fine-grain limestone with numerous boring mollusks lies in the roof of carboniferous rocks. They are underlain by coarse- and medium-grain organogenic–detrital limestones. The fine-grain limestone disappears in some areas, where Jurassic clay is underlain by coarse- and medium-grain limestone, also bored by mollusks. A member of interstratified fine-grain greenish-grey low-clay limestones and calcareous greenish-grey clays lies underneath. Heavily pyritized rocks at the contact between Carboniferous carbonate and Jurassic clay deposits, revealed at the Pan'shinskoe deposit, are unique for the Moskovskaya Synclise. Similar contacts of Carboniferous and Jurassic rocks can be seen at the Nikitskoe, Domodedovskoe, Afa- nas'evskoe, and Shchurovskoe deposits; however, no pyritized limestone was found here. Pyritized rocks, represented by coarse- and medium-size organogenic-detrital limestones of black, dark grey, and grey color, lie as interlayers and lenses 0.2–0.5 m in thickness and up to 20–50 m in length in the roof of Carboniferous rock section, in which they have been stripped in the north- ern part of the quarry. In some areas, limestones in the roof of interlayers and lenses are oxide- brown in color. Macroscopically, pyrite was detected in both dark and axide-brown rocks in the form of fine (1–2 mm) inclusions. Detailed sampling followed by analytical X-ray spectroscopic determinations of Fe2O3 and S have shown the black and dark grey rocks to contain, on the aver- age, 3.2%; grey rocks, 0.8%; and oxide-brown rocks, 0.3% of disulfides. No sulfur was recorded in the rock immediately underlying the lenses and interlayers. Combined polished sections, made of rocks with different petrographic composition and color, were found to contain the following authigenic minerals: calcite, pyrite, white iron pyrite, iron hydroxides (judging by its color, it is likely pyrite), and chalcedony. The pyrite, which is far in excess of white iron pyrite, is represented by cryptocrystalline inclusions, sometimes, in the form of framboidal aggregates. Stage analysis of the mineral-formation series at this phase of study established the follow- ing mineralogical–geochemical zones: zone of unaffected rocks, pyritization zone, oxidation zone, repyritization zone. Studying the polished sections established that the disulfide mineralization is represented by pyrite alone, sometimes, in the form of framboidal aggregates. In black and dark gray limestones, pyrite partially replaces organogenic detritus, mostly, echinoderms fragments. Those fragments show very intense regeneration of calcite with fringes of the newly formed carbonate with auto- morphic faceting almost completely fill the pore space and form basal cement, making the rock extremely strong. In oxide-brown limestone, pyrite in organogenic detritus is partially or completely replaced by iron hydroxides, while idiomorphic regeneration fringes of calcite are overgrown by a new py- rite generation showing no oxidation signs. Stage analysis of mineral formation series shows the pyritization of limestones in the roof of Carboniferous deposits to have include two stages, separated by a stage of rock oxidation. The development of the Pan'shinskoe deposit (which is known in the paleontological litera- ture as the Peski location) showed the limestones of the peskovskaya stratum to contain five karst — 6 — funnels, filled by sad-clay deposits of Bathonian–Bajocian time, Middle Jurassic, containing bone remains of fishes, amphibian, reptiles, and mammals, as well as seeds, leaf fragments, and the woody tissue of fern and gymnosperms [1]. These finding show that the climate during the Middle Jurassic was warm and subtropic. The presence of annual rings in wood remains and leaf fragments of foliage plants suggests the seasonal climate, though the analysis of the width of annual rings shows the seasonal character of the climate to be due to drought periods rather than cooling [3]. Such conditions were favorable for the formation of bogs with considerable accumulation of plant remains in depressions of Paleozoic paleorelief. The sedimentogenic waters of such bogs were ultra-acid and highly reducing with high concentration of dissolved Fe(II) [2] and sulfur, resulting from sulfate reduction. Penetrating into underlying limestones, those solutions caused redistribu- tion (regeneration) of calcite, while their neutralization led to pyrite precipitation. During periods of droughts and disappearance of bogs, oxygen-containing waters could penetrate into pyritized rocks,